JPH0345307Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a tape cassette loading device provided in an apparatus for recording and/or reproducing at least one of magnetic tape in a tape cassette.

BACKGROUND ART Conventional videotape cassettes are inserted with the lid facing forward, which is what is called lateral insertion. In such lateral insertion, the cassette lid is unlocked by a lock release piece provided on the side surface of the cassette holder pressing a release protrusion provided on the cassette when the cassette is inserted.

Magnetic recording where such lateral insertion is used/
Since the playback device has a large cassette insertion slot formed on its front face, the number of operation keys provided on the front face is limited, and the outer shape of the operation keys must also be made relatively small. Therefore, there has been a desire for a cassette loading device in which the cassette is inserted vertically and the cassette insertion opening is made smaller.

Purpose An object of the present invention is to provide a cassette loading device that can reliably release the locked state of the front cover when inserting a cassette in the vertical direction.

Embodiment FIG. 1 is a perspective view of a cassette used in a cassette loading device according to the present invention, and FIG. 2 is a bottom view seen from the side indicated by arrow A in FIG. The cassette 1 includes a cassette body 2 and a lid 3 which is pivotally supported on the upper part of the cassette body 2 so as to be openable and closable. 4 and 5 are contact surfaces for positioning the cassette during lateral insertion. Further, a prevention groove 6 is formed near the center of the lid 3 to prevent incorrect insertion during lateral insertion. A lid 3 is provided on one side 2a of the cassette main body 2.
A release protrusion 7 is formed to release the lock, and by pressing the release protrusion 7, the lid 3 can be opened and closed. A prevention groove 8 is formed in the bottom surface 2b of the cassette body 2 to prevent incorrect insertion during vertical insertion. This prevention groove 8 is formed along the longitudinal direction of the cassette body 2.

3 is a simplified side view of the cassette holder provided in the cassette loading device according to the present invention, FIG. 4 is a bottom view thereof, and FIG. 5 is a partially enlarged view of FIG. 4. A cassette holder 20 for holding a cassette 1 is supported by a frame (not shown) of a cassette loading device so as to be movable up and down.
A detection lever 2 is attached to the side of this cassette holder 20.
1 is provided. This cassette detection lever 2
1 has long holes 22, 2 extending along its longitudinal direction.
3 is formed. Pins 24 and 25 provided in the cassette holder 20 are inserted into the long holes 22 and 23.
are engaged, so that the cassette detection lever 21 is slidable along its longitudinal direction. One end of a spring 27 is fixed to the locking portion 26 of the detection lever 21, and the other end of the spring 27 is fixed to the locking portion 28 of the cassette holder 20. As a result, the detection lever 21 is biased by a spring in a direction opposite to the cassette insertion direction D. A contact portion 29 with which the cassette 1 comes into contact is provided at one end of the cassette detection lever 21 (left and right ends in FIG. 3). The other end of the cassette detection lever 21 is connected to the bottom surface 20 of the cassette holder 20.
It is curved towards the a side. The bent portion 30 is roughly U-shaped, and a pair of engaging pieces 31 and 32 extending in the width direction of the cassette holder 20 are integrally formed.

Cassette detection lever 21 of cassette holder 20
A connecting member 34 is provided on the surface opposite to the surface provided with. The connecting member 34 includes a main body 35 extending in the longitudinal direction of the cassette holder 20 and an elongated member 36 extending perpendicularly to the main body 35. A long hole 37 extending in the width direction of the cassette holder 20 is formed in the extending portion 36 . A long hole 38 extending in the longitudinal direction is formed in the main body 35 of the connecting member 34 . Further, a long hole 40 extending in a direction perpendicular to the cassette holder 20 is formed at the other end of the main body 35.

A pin 41 is provided on the bottom surface 20a of the cassette holder 20.
Accordingly, a swinging piece 42 that is swingable around the axis of the pin 41 is provided. One end 42a of this swinging piece 42 is connected to the engaging piece 3 of the cassette detection lever 21.
1 and 32, and a pin 43 is engaged with the elongated hole 37 at the other end 42b of the swinging piece 42. Therefore, when the cassette detection lever 21 is displaced along the cassette insertion direction D, the connecting member 34 can also be displaced along the cassette insertion direction D via the swing piece 42.

A bearing portion 50 fixed to the cassette holder 20 is provided near the elongated hole 40 of the connecting member 34. This bearing portion 50 is provided with a support shaft 51, and a pressing body 52 is provided rotatably around the axis of this support shaft 51. A protrusion 53 is formed at one end of the pressing portion 52, and this protrusion 53 is fitted into the elongated hole 40 of the connecting member 34. Further, a protrusion 54 protruding downward in FIG. 5 is formed at the other end of the pressing body 52. A shaft 55 formed in the cassette holder 20 of the connecting member 34 engages with the elongated hole 38, so that the connecting member 34 is slidable along the cassette insertion direction.

FIG. 6 is a side view of the cassette holder 20 when the cassette 1 is inserted, and FIG. 7 is a bottom view thereof. Figure 6 corresponds to Figure 3, and Figure 7
The figure corresponds to FIG. When the cassette 1 is inserted through a cassette insertion slot (not shown), the cassette feeding roller 60 is rotated in the direction of arrow C by a drive source (not shown). By the rotation of the feed roller 60, the cassette 1 is horizontally transferred from the cassette insertion opening and into the interior of the cassette holder 20. When the cassette 1 is transferred into the cassette holder 20, the tip of the cassette comes into contact with the contact portion 29 of the cassette detection lever 21, and the cassette detection lever 21 moves against the spring force of the spring 27 to remove the cassette. It is displaced in the insertion direction D. As the cassette detection lever 21 is moved, the swinging piece 42 swings around the axis of the support shaft 41 in the direction of arrow F (see FIG. 5) via the bending portion 30. As a result, the pin 37 of the swinging piece 42 slides the connecting member 34 in the direction opposite to the arrow D through the elongated hole 36 of the connecting member 34. As a result, the pressing body 52 rotates in the direction of arrow E (see FIG. 5) around the axis of the support shaft 51 through the elongated hole 40 of the connecting member 34, thereby releasing the release protrusion 7 of the cassette 1. Press. In this way, the lid 3 of the cassette 1 becomes open.

Effects As described above, according to the present invention, the front cover can be reliably unlocked even when the cassette is inserted vertically.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a cassette used in the cassette loading device according to the present invention, Fig. 2 is a bottom view seen from the arrow A side in Fig. 1, and Fig. 3 is a cassette equipped in the cassette loading device according to the present invention. 4 is a bottom view of FIG. 3, FIG. 5 is a partially enlarged view of FIG. 4, and FIG. 6 is a side view of the cassette holder when cassette 1 is inserted. FIG. 7 is a bottom view thereof. 1...Cassette, 2...Cassette body, 3...Lid body,
7...Release protrusion, 12...Cassette holder, 60...Feeding roller, 21...Cassette detection lever, 34...
Connection member, 42... Rocking piece, 52... Pressing body.

Claims (1)

[Scope of Claim for Utility Model Registration] A cassette holder in which a cassette having a release protrusion on the side surface for unlocking the front cover of the cassette is inserted and guided with the release protrusion in front or in front of the cassette, and a direction in which the cassette is horizontally transferred to the cassette holder. A cassette characterized in that it includes a detection means that is slidably slidable along the cassette and detects the completion of horizontal transfer of the cassette, and a release means that works in conjunction with the detection means and releases the locked state of the cassette front cover. Loading device.